Edited By: Pragati Bhandari

Arapaima (Arapaima gigas)  The arapaima is a large freshwater fish native to the Amazon River basin in South America. It possesses a specialized respiratory system that allows it to gulp air at the water's surface, extracting oxygen from the atmosphere.

Walking Catfish  (Clarias batrachus) Walking catfish, also known as the air-breathing catfish, are found in Southeast Asia. They can tolerate low-oxygen water conditions and have the ability to breathe atmospheric air by using a modified swim bladder.

Snakehead Fish (Channa spp) Snakehead fish are a group of freshwater fish found in Africa and Asia. They have a labyrinth organ that allows them to extract oxygen from the air, which is particularly useful when water conditions are poor.

Gouramis (Family: Osphronemidae) Several species of gouramis, including the popular Betta fish, have a labyrinth organ, which enables them to breathe air. They are often seen rising to the water's surface to gulp air.

Electric Eel  (Electrophorus electricus) The electric eel is a South American fish known for its ability to produce electric shocks. It also possesses a modified swim bladder that allows it to take in atmospheric air, supplementing its oxygen intake.

Climbing Perch  (Anabas testudineus) The climbing perch is a freshwater fish native to Southeast Asia. It is capable  of surviving in oxygen-depleted waters and can breathe air  by using a specialized respiratory structure  called the labyrinth organ.

Swamp Eel  (Family: Synbranchidae) Swamp eels are found in various regions, including Africa, Asia, and the Americas. They have a specialized vascularized respiratory system in their skin, which allows them to extract oxygen from the air when necessary.

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